I hope you are trolling for the sake of spirited conversation, but I fear you are not....
Yielding to the lower jumper is NOT OBSOLETE! In fact, your suggestion is dangerous and I encourage jumpers to disregard it.
The reasons we yield to the lower jumpers are simple. First, jumpers in the pattern are (correctly) focused on their landings, which dictates giving primary attention to what is BELOW them. Jumpers are ALWAYS responsible to clear the area in their flight path - like clearing the area to the left or right AND below before making a turn. This includes pattern flight and final approach. Second, it is often impossible to see traffic above us because our canopies block much of the view. Yielding to the higher jumper simply doesn't make sense and much of the time would be impossible because of the blocked view. It also distracts from the mission at hand - clearing the flight path ahead and below, and landing safely.
The "low person has the right of way" is a basic premise in all of aviation. CFR 92.113.g states in part "When two or more aircraft are approaching an airport for the purpose of landing, the aircraft at the lower altitude has the right-of-way...". Additionally, the USPA Skydiver's Information Manual agrees with this rule. SIM Section 6-1.C.3.c states "the low person has the right-of-way both in freefall and under canopy". Deciding on our own to buck accepted practices leads to confusion, and that leads to problems.
As for high performance canopies and the jumpers who fly them, they are ALWAYS responsible to yield to lower traffic. This makes perfect sense. The higher jumper has the best field of view of the jumpers below them, they can monitor lower traffic without looking away from their flight path, they have more altitude to make an avoidance maneuver if necessary, and it's consistent with aviation and skydiving norms. I am a former high performance canopy jumper (and still have a rate of descent faster than many others) and can say in practice that yielding to the lower jumper works. When I am descending faster than the jumpers below me, I have the best opportunity to observe what they are doing and have the best field of view to decide how to avoid conflict.
There are a lot of great ideas out in the field. Suggesting lower jumpers attempt to yield to traffic above them is a really, REALLY bad idea. My suggestion to other jumpers - no disrespect intended - is to COMPLETELY ignore your advice.